Senior Linux Infrastructure Engineer

TECHEDGE-SOLUTION PRIVATE LIMITED; Singapore; On-site; SGD 120,000 - 170,000; Full time

Job summary

TECHEDGE-SOLUTION PRIVATE LIMITED is seeking a highly experienced Linux System Administrator/SME to lead enterprise Linux infrastructure in Singapore. You will handle advanced troubleshooting, performance optimization, security compliance and automation, guiding operations teams.

The role requires deep hands-on expertise in RHEL, Unix/Linux administration, and managing large-scale production environments with L2/L3 support. On-site work in Singapore is expected.

Qualifications

• Must have hands-on Linux administration and OS troubleshooting
• Strong experience with RHEL/CentOS/Ubuntu/SUSE environments
• Kernel tuning and performance optimization expertise
• Storage concepts: LVM/RAID/NFS/SAN, multipathing
• Security hardening and patch management practices
• Automation and configuration management with Ansible

Responsibilities

• Act as Linux Infrastructure SME and provide technical leadership for enterprise Linux environments.
• Manage, administer and support large-scale Linux server infrastructure.
• Provide advanced L2/L3 OS-level incident resolution.
• Perform Linux installation, configuration, upgrades, migration and patch management.
• Manage RHEL, CentOS, Ubuntu and SUSE environments.
• Troubleshoot system performance, kernel issues, memory, CPU, disk and filesystem problems.
• Manage storage, LVM, RAID, NFS, SAN, multipathing and filesystem configurations.
• Implement and maintain high availability, clustering and disaster recovery solutions.
• Perform OS hardening, vulnerability remediation and security compliance activities.
• Develop and implement automation using Ansible, Shell scripting and Python.
• Lead root cause analysis (RCA) for critical incidents and recurring infrastructure issues.
• Establish Linux administration standards, operational procedures and best practices.
• Collaborate with network, storage, database, security and application teams.
• Mentor junior Linux administrators and provide technical guidance.
• Participate in infrastructure transformation, migration and technology upgrade initiatives.

Tools

VMware

KVM

Docker

Kubernetes

Nagios

Zabbix

Grafana

Prometheus

Ansible

Job description

TECHEDGE-SOLUTION PRIVATE LIMITED is seeking a highly experienced Linux System Administrator/SME to lead enterprise Linux infrastructure in Singapore. You will handle advanced troubleshooting, performance optimization, security compliance and automation, guiding operations teams.

The role requires deep hands-on expertise in RHEL, Unix/Linux administration, and managing large-scale production environments with L2/L3 support. On-site work in Singapore is expected.